Aug 26 2020September 1, 2020 The Importance of Using pH and PPM Pens for Your Cannabis Grow Room By Ken Carmen / August 26, 2020 September 1, 2020 / Latest Articles / Article, Cannabis Article, Cannabis Growing Tips, Cannabis Latest Articles, Cannabis News, Cannabis News Tips, Cannabis Tips and Tricks, Las vegas Cannabis news, Latest Articles, Latest News, Marijuana News, Medical News, News, Tips / 4 minutes of reading / Leave a Comment Whether you’re new to growing and embarking on your first indoor crop or you’re a… Read More »